5 extern cvar_t r_labelsprites_scale;
6 extern cvar_t r_labelsprites_roundtopixels;
7 extern cvar_t r_track_sprites;
8 extern cvar_t r_track_sprites_flags;
9 extern cvar_t r_track_sprites_scalew;
10 extern cvar_t r_track_sprites_scaleh;
11 extern cvar_t r_overheadsprites_perspective;
12 extern cvar_t r_overheadsprites_pushback;
15 #define TSF_ROTATE_CONTINOUSLY 2
17 // use same epsilon as in sv_phys.c, it's not in any header, that's why i redefine it
18 // MIN_EPSILON is for accurateness' sake :)
20 # define EPSILON (1.0f / 32.0f)
21 # define MIN_EPSILON 0.0001f
25 If the sprite is out of view, track it.
26 `origin`, `left` and `up` are changed by this function to achive a rotation around
36 void R_TrackSprite(const entity_render_t *ent, vec3_t origin, vec3_t left, vec3_t up, int *edge, float *dir_angle)
39 vec3_t bCoord; // body coordinates of object
42 // temporarily abuse bCoord as the vector player->sprite-origin
43 VectorSubtract(origin, r_refdef.view.origin, bCoord);
44 distance = VectorLength(bCoord);
46 // Now get the bCoords :)
47 Matrix4x4_Transform(&r_refdef.view.inverse_matrix, origin, bCoord);
49 *edge = 0; // FIXME::should assume edge == 0, which is correct currently
50 for(i = 0; i < 4; ++i)
52 if(PlaneDiff(origin, &r_refdef.view.frustum[i]) < -EPSILON)
56 // If it wasn't outside a plane, no tracking needed
59 float x, y; // screen X and Y coordinates
60 float ax, ay; // absolute coords, used for division
61 // I divide x and y by the greater absolute value to get ranges -1.0 to +1.0
63 bCoord[2] *= r_refdef.view.frustum_x;
64 bCoord[1] *= r_refdef.view.frustum_y;
66 //Con_Printf("%f %f %f\n", bCoord[0], bCoord[1], bCoord[2]);
70 // get the greater value and determine the screen edge it's on
87 if(ax < MIN_EPSILON) // this was == 0.0f before --blub
89 // get the -1 to +1 range
93 ax = (1.0f / VectorLength(left));
94 ay = (1.0f / VectorLength(up));
95 // Using the placement below the distance of a sprite is
96 // real dist = sqrt(d*d + dfxa*dfxa + dgyb*dgyb)
97 // d is the distance we use
105 // real dist (r) shall be d, so
106 // r*r = d*d + dfxa*dfxa + dgyb*dgyb
107 // r*r = d*d * (1 + fxa*fxa + gyb*gyb)
108 // d*d = r*r / (1 + fxa*fxa + gyb*gyb)
109 // d = sqrt(r*r / (1 + fxa*fxa + gyb*gyb))
111 distance = sqrt((distance*distance) / (1.0 +
112 r_refdef.view.frustum_x*r_refdef.view.frustum_x * x*x * ax*ax +
113 r_refdef.view.frustum_y*r_refdef.view.frustum_y * y*y * ay*ay));
114 // ^ the one we want ^ the one we have ^ our factors
116 // Place the sprite a few units ahead of the player
117 VectorCopy(r_refdef.view.origin, origin);
118 VectorMA(origin, distance, r_refdef.view.forward, origin);
119 // Move the sprite left / up the screeen height
120 VectorMA(origin, distance * r_refdef.view.frustum_x * x * ax, left, origin);
121 VectorMA(origin, distance * r_refdef.view.frustum_y * y * ay, up, origin);
123 if(r_track_sprites_flags.integer & TSF_ROTATE_CONTINOUSLY)
125 // compute the rotation, negate y axis, we're pointing outwards
126 *dir_angle = atan(-y / x) * 180.0f/M_PI;
127 // we need the real, full angle
129 *dir_angle += 180.0f;
132 left[0] *= r_track_sprites_scalew.value;
133 left[1] *= r_track_sprites_scalew.value;
134 left[2] *= r_track_sprites_scalew.value;
136 up[0] *= r_track_sprites_scaleh.value;
137 up[1] *= r_track_sprites_scaleh.value;
138 up[2] *= r_track_sprites_scaleh.value;
142 void R_RotateSprite(const mspriteframe_t *frame, vec3_t origin, vec3_t left, vec3_t up, int edge, float dir_angle)
144 if(!(r_track_sprites_flags.integer & TSF_ROTATE))
146 // move down by its size if on top, otherwise it's invisible
148 VectorMA(origin, -(fabs(frame->up)+fabs(frame->down)), up, origin);
150 static float rotation_angles[5] =
159 // rotate around the hotspot according to which edge it's on
160 // since the hotspot == the origin, only rotate the vectors
167 if(edge < 1 || edge > 4)
168 return; // this usually means something went wrong somewhere, there's no way to get a wrong edge value currently
170 dir[0] = frame->right + frame->left;
171 dir[1] = frame->down + frame->up;
173 // only rotate when the hotspot isn't the center though.
174 if(dir[0] < MIN_EPSILON && dir[1] < MIN_EPSILON)
179 // Now that we've kicked center-hotspotted sprites, rotate using the appropriate matrix :)
181 // determine the angle of a sprite, we could only do that once though and
182 // add a `qboolean initialized' to the mspriteframe_t struct... let's get the direction vector of it :)
184 angle = atan(dir[1] / dir[0]) * 180.0f/M_PI;
186 // we need the real, full angle
190 // Rotate around rotation_angle - frame_angle
191 // The axis SHOULD equal r_refdef.view.forward, but let's generalize this:
192 CrossProduct(up, left, axis);
193 if(r_track_sprites_flags.integer & TSF_ROTATE_CONTINOUSLY)
194 Matrix4x4_CreateRotate(&rotm, dir_angle - angle, axis[0], axis[1], axis[2]);
196 Matrix4x4_CreateRotate(&rotm, rotation_angles[edge] - angle, axis[0], axis[1], axis[2]);
197 Matrix4x4_Transform(&rotm, up, temp);
198 VectorCopy(temp, up);
199 Matrix4x4_Transform(&rotm, left, temp);
200 VectorCopy(temp, left);
204 static float spritetexcoord2f[4*2] = {0, 1, 0, 0, 1, 0, 1, 1};
206 void R_Model_Sprite_Draw_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
209 dp_model_t *model = ent->model;
210 vec3_t left, up, org, mforward, mleft, mup, middle;
211 float scale, dx, dy, hud_vs_screen;
213 float dir_angle = 0.0f;
216 // nudge it toward the view to make sure it isn't in a wall
217 Matrix4x4_ToVectors(&ent->matrix, mforward, mleft, mup, org);
218 VectorSubtract(org, r_refdef.view.forward, org);
219 switch(model->sprite.sprnum_type)
221 case SPR_VP_PARALLEL_UPRIGHT:
223 // vertical beam sprite, faces view plane
224 scale = ent->scale / sqrt(r_refdef.view.forward[0]*r_refdef.view.forward[0]+r_refdef.view.forward[1]*r_refdef.view.forward[1]);
225 left[0] = -r_refdef.view.forward[1] * scale;
226 left[1] = r_refdef.view.forward[0] * scale;
232 case SPR_FACING_UPRIGHT:
234 // vertical beam sprite, faces viewer's origin (not the view plane)
235 scale = ent->scale / sqrt((org[0] - r_refdef.view.origin[0])*(org[0] - r_refdef.view.origin[0])+(org[1] - r_refdef.view.origin[1])*(org[1] - r_refdef.view.origin[1]));
236 left[0] = (org[1] - r_refdef.view.origin[1]) * scale;
237 left[1] = -(org[0] - r_refdef.view.origin[0]) * scale;
244 Con_Printf("R_SpriteSetup: unknown sprite type %i\n", model->sprite.sprnum_type);
245 // fall through to normal sprite
246 case SPR_VP_PARALLEL:
249 VectorScale(r_refdef.view.left, ent->scale, left);
250 VectorScale(r_refdef.view.up, ent->scale, up);
252 case SPR_LABEL_SCALE:
255 // fixed HUD pixel size specified in sprite
257 // honors a global label scaling cvar
259 if(r_waterstate.renderingscene) // labels are considered HUD items, and don't appear in reflections
262 // See the R_TrackSprite definition for a reason for this copying
263 VectorCopy(r_refdef.view.left, left);
264 VectorCopy(r_refdef.view.up, up);
265 // It has to be done before the calculations, because it moves the origin.
266 if(r_track_sprites.integer)
267 R_TrackSprite(ent, org, left, up, &edge, &dir_angle);
269 scale = 2 * ent->scale * (DotProduct(r_refdef.view.forward, org) - DotProduct(r_refdef.view.forward, r_refdef.view.origin)) * r_labelsprites_scale.value;
270 VectorScale(left, scale * r_refdef.view.frustum_x / vid_conwidth.integer, left); // 1px
271 VectorScale(up, scale * r_refdef.view.frustum_y / vid_conheight.integer, up); // 1px
276 // fixed pixel size specified in sprite
277 // tries to get the right size in HUD units, if possible
279 // honors a global label scaling cvar before the rounding
280 // FIXME assumes that 1qu is 1 pixel in the sprite like in SPR32 format. Should not do that, but instead query the source image! This bug only applies to the roundtopixels case, though.
282 if(r_waterstate.renderingscene) // labels are considered HUD items, and don't appear in reflections
285 // See the R_TrackSprite definition for a reason for this copying
286 VectorCopy(r_refdef.view.left, left);
287 VectorCopy(r_refdef.view.up, up);
288 // It has to be done before the calculations, because it moves the origin.
289 if(r_track_sprites.integer)
290 R_TrackSprite(ent, org, left, up, &edge, &dir_angle);
292 scale = 2 * (DotProduct(r_refdef.view.forward, org) - DotProduct(r_refdef.view.forward, r_refdef.view.origin));
294 if(r_labelsprites_roundtopixels.integer)
297 vid_conwidth.integer / (float) r_refdef.view.width,
298 vid_conheight.integer / (float) r_refdef.view.height
299 ) / max(0.125, r_labelsprites_scale.value);
301 // snap to "good sizes"
304 if(hud_vs_screen <= 0.6)
305 hud_vs_screen = 0; // don't, use real HUD pixels
306 else if(hud_vs_screen <= 1.41)
308 else if(hud_vs_screen <= 3.33)
311 hud_vs_screen = 0; // don't, use real HUD pixels
316 VectorScale(left, scale * r_refdef.view.frustum_x / (r_refdef.view.width * hud_vs_screen), left); // 1px
317 VectorScale(up, scale * r_refdef.view.frustum_y / (r_refdef.view.height * hud_vs_screen), up); // 1px
322 VectorScale(left, scale * r_refdef.view.frustum_x / vid_conwidth.integer * r_labelsprites_scale.value, left); // 1px
323 VectorScale(up, scale * r_refdef.view.frustum_y / vid_conheight.integer * r_labelsprites_scale.value, up); // 1px
326 if(hud_vs_screen == 1)
328 VectorMA(r_refdef.view.origin, scale, r_refdef.view.forward, middle); // center of screen in distance scale
329 dx = 0.5 - fmod(r_refdef.view.width * 0.5 + (DotProduct(org, left) - DotProduct(middle, left)) / DotProduct(left, left) + 0.5, 1.0);
330 dy = 0.5 - fmod(r_refdef.view.height * 0.5 + (DotProduct(org, up) - DotProduct(middle, up)) / DotProduct(up, up) + 0.5, 1.0);
331 VectorMAMAM(1, org, dx, left, dy, up, org);
337 VectorScale(left, scale * r_refdef.view.frustum_x / vid_conwidth.integer * r_labelsprites_scale.value, left); // 1px
338 VectorScale(up, scale * r_refdef.view.frustum_y / vid_conheight.integer * r_labelsprites_scale.value, up); // 1px
342 // bullet marks on walls
343 // ignores viewer entirely
344 VectorCopy(mleft, left);
347 case SPR_VP_PARALLEL_ORIENTED:
348 // I have no idea what people would use this for...
349 // oriented relative to view space
350 // FIXME: test this and make sure it mimicks software
351 left[0] = mleft[0] * r_refdef.view.forward[0] + mleft[1] * r_refdef.view.left[0] + mleft[2] * r_refdef.view.up[0];
352 left[1] = mleft[0] * r_refdef.view.forward[1] + mleft[1] * r_refdef.view.left[1] + mleft[2] * r_refdef.view.up[1];
353 left[2] = mleft[0] * r_refdef.view.forward[2] + mleft[1] * r_refdef.view.left[2] + mleft[2] * r_refdef.view.up[2];
354 up[0] = mup[0] * r_refdef.view.forward[0] + mup[1] * r_refdef.view.left[0] + mup[2] * r_refdef.view.up[0];
355 up[1] = mup[0] * r_refdef.view.forward[1] + mup[1] * r_refdef.view.left[1] + mup[2] * r_refdef.view.up[1];
356 up[2] = mup[0] * r_refdef.view.forward[2] + mup[1] * r_refdef.view.left[2] + mup[2] * r_refdef.view.up[2];
359 VectorScale(r_refdef.view.left, ent->scale, left);
360 VectorScale(r_refdef.view.up, ent->scale, up);
362 VectorCopy(r_refdef.view.up, up);
363 up[2] = up[2] + r_overheadsprites_perspective.value; VectorNormalize(up); // some rotation
364 VectorScale(up, ent->scale, up);
365 // offset (move nearer to player, yz is camera plane)
366 VectorSubtract(r_refdef.view.origin, org, middle);
367 VectorNormalize(middle);
368 org[0] = org[0] + middle[0]*r_overheadsprites_pushback.value;
369 org[1] = org[1] + middle[1]*r_overheadsprites_pushback.value;
370 org[2] = org[2] + middle[2]*r_overheadsprites_pushback.value;
371 // simlulate a bit of perspective effect
372 up[2] = up[2] + r_overheadsprites_perspective.value;
376 // LordHavoc: interpolated sprite rendering
377 for (i = 0;i < MAX_FRAMEBLENDS;i++)
379 if (ent->frameblend[i].lerp >= 0.01f)
381 mspriteframe_t *frame;
383 RSurf_ActiveCustomEntity(&identitymatrix, &identitymatrix, ent->flags, 0, ent->colormod[0], ent->colormod[1], ent->colormod[2], ent->alpha * ent->frameblend[i].lerp, 4, vertex3f, spritetexcoord2f, NULL, NULL, NULL, NULL, 2, polygonelement3i, polygonelement3s, false, false);
384 frame = model->sprite.sprdata_frames + ent->frameblend[i].subframe;
385 texture = R_GetCurrentTexture(model->data_textures + ent->frameblend[i].subframe);
387 // lit sprite by lightgrid if it is not fullbright, lit only ambient
388 if (!(texture->currentmaterialflags & MATERIALFLAG_FULLBRIGHT))
389 VectorAdd(ent->modellight_ambient, ent->modellight_diffuse, rsurface.modellight_ambient); // sprites dont use lightdirection
391 // SPR_LABEL should not use depth test AT ALL
392 if(model->sprite.sprnum_type == SPR_LABEL || model->sprite.sprnum_type == SPR_LABEL_SCALE)
393 if(texture->currentmaterialflags & MATERIALFLAG_SHORTDEPTHRANGE)
394 texture->currentmaterialflags = (texture->currentmaterialflags & ~MATERIALFLAG_SHORTDEPTHRANGE) | MATERIALFLAG_NODEPTHTEST;
398 // FIXME:: save vectors/origin and re-rotate? necessary if the hotspot can change per frame
399 R_RotateSprite(frame, org, left, up, edge, dir_angle);
403 R_CalcSprite_Vertex3f(vertex3f, org, left, up, frame->left, frame->right, frame->down, frame->up);
405 R_DrawCustomSurface_Texture(texture, &identitymatrix, texture->currentmaterialflags, 0, 4, 0, 2, false, false);
409 rsurface.entity = NULL;
412 void R_Model_Sprite_Draw(entity_render_t *ent)
415 if (ent->frameblend[0].subframe < 0)
418 Matrix4x4_OriginFromMatrix(&ent->matrix, org);
419 R_MeshQueue_AddTransparent(ent->flags & RENDER_NODEPTHTEST ? r_refdef.view.origin : org, R_Model_Sprite_Draw_TransparentCallback, ent, 0, rsurface.rtlight);